PEB3265 Infineon Technologies Corporation, PEB3265 Datasheet - Page 116

• Manufacturer Part Number: PEB3265
• Description: (PEB326x / PEB426x) Dual Channel Slicofi-2 / Slic Duslic
• Manufacturer: Infineon Technologies Corporation

Preliminary
K
K
K
K
R
R
V
V
Note: Measurement of pins IL, IO3, IO4, IO4-IO3 and VDD can cause problems in the
Measurement of AC signals via DC levelmeter
This method is applicable for a single frequency sinusoidal AC signal which is
superimposed on a DC signal.
1. Set the ring frequency f
2. Set the offset registers OFR1 and OFR2 to 0x00.
3. Measure the DC content with disabled rectifier (bit LM-RECT = 0).
4. The offset registers OFR1 and OFR2 have to be programmed to the value
5. Repeating the measurement of the DC content should result in a LM
6. Perform a new measurement with the rectifier enabled (bit LM-RECT = 1). The result
7. From this result the peak value and the RMS value can be calculated:
Data Sheet
INTDC
IT,PDR
IT
IL
AD
DC
IT2
IL
of the expected signal period may also be used.
The DC content can be calculated as described in
Note: If there was an overflow inside the integrator during the integration period, the
result will be ± fullscale. Reduce the shift factor K
N
where OFR1 is the high byte and OFR2 is the low byte of the 16 bit word OFFSET.
is the rectified mean value of the measured signal an can be calculated with the
formulas of
OFFSET
Samples
DC loop. The measured value is always interpreted as I
disturb the DC regulation and the off-hook indication. In active mode you can
freeze the output of the DC loop by setting the bit LM-HOLD to '1'. In ringburst
mode it is possible that DuSLIC automatically switches back to ringpause mode
because the measurement result was interpreted as off-hook. This can be avoided
by programming the off-hook current to the maximum value (79.66 mA).
and start the measurement again.
Shift Factor (see
Value of the current divider in power down resistive mode
Value of the current divider for transversal current
Value of the current divider for longitudinal current
Sense resistor for transversal current
Sense resistor for longitudinal current
Voltage at A/D converter refered to digital fullscale
DC output voltage at SLIC measured via DCN – DCP
=
Table
–
----------------------------------------------------------- -
N Samples
31.
LM Value
RING
Table
K INTDC
to the frequency of the signal to be measured. Multiples
29)
116
Table
INTDC
31.
or the number of samples
Operational Description
TRANS
current. This can
Value
100
1.0834
5
50
680
1600
of zero.
2000-07-14
DuSLIC